Looks like the shaker is sitting a bit low in the opening there. Any room to adjust that?
It's looks really good IMO. As others have said, you have to raise the shaker though. Good job and way to be different without messing it up!
Can't you mount the shaker to the engine so it "shakes"? I think it if was me I'd try to mount it to the top of the engine and leave the bottom open so as you drive maybe the cool air would just blow the heat out of the engine bay.